(;GM[1]FF[4]SZ[19]
GN[Sente ko.]
PC[http://senseis.xmp.net/?CountingProblem1/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?CountingProblem1/Solution

Sente ko.]
PL[B]

AB[ga][gb][hb][jb][gc][gd]
AW[ha][ja][ka][la][ib][lb][hc][jc][kc][lc][hd][id][jd]

;B[ia]C[B1]MN[1]
;W[kb]C[W2]MN[2]

;
)
